<template>
    <div class="top-category">
        <div class="container">
            <XtxBread>
                <XtxBreadItem :to="{ path: '/' }">首页</XtxBreadItem>
                <Transition name="fade-right" mode="out-in">
                    <XtxBreadItem :key="subTopCategory.id">{{ subTopCategory.name }}</XtxBreadItem>
                </Transition>
            </XtxBread>
            <!-- 轮播图 -->
            <XtxCarousel :sliders="sliders" style="height: 500px" />
            <!-- 所有二级分类 -->
            <div class="sub-list">
                <h3>全部分类</h3>
                <ul>
                    <li v-for="item in subTopCategory.children" :key="item.id">
                        <a href="javascript:;">
                            <img :src="item.picture" />
                            <p>{{ item.name }}</p>
                        </a>
                    </li>
                </ul>
            </div>
            <!-- 分类关联商品 -->
            <div class="ref-goods" v-for="sub in subList" :key="sub.id">
                <div class="head">
                    <h3>- {{sub.name}} -</h3>
                    <p class="tag">{{sub.name}}</p>
                    <XtxMore :path="`/category/sub/${sub.id}`" />
                </div>
                <div class="body">
                    <GoodsItem v-for="i in sub.goods" :key="i.id" :goods="i" />
                </div>
            </div>
        </div>
    </div>
</template>

<script>
import { computed, ref, watch } from "vue";
import { findBanner } from "@/api/home";
import { useStore } from "vuex";
import { useRoute } from "vue-router";
import GoodsItem from "./components/goods-item";
import { findTopCategory } from "@/api/category";
export default {
    name: "TopCategory",
    components: {
        GoodsItem,
    },
    setup() {
        const sliders = ref([]);
        findBanner().then((data) => {
            sliders.value = data.result;
        });
        // 面包屑+分类
        const store = useStore();
        const route = useRoute();
        const subTopCategory = computed(() => {
            let cate = {};
            const items = store.state.category.list.find(
                (item) => item.id === route.params.id
            );
            if (items) cate = items;
            return cate;
        });
        // 获取子分类数据
        const subList = ref([]);
        const getSubList = () => {
            findTopCategory(route.params.id).then((data) => {
                subList.value = data.result.children;
            });
        };
        watch(()=>route.params.id,(newVal)=>{
            // newVal && getSubList()
            if (newVal && `/category/${newVal}` === route.path) {
                getSubList()
            }
        },{
            immediate:true
        })
        return {
            sliders,
            subTopCategory,
            subList
        };
    },
};
</script>
<style scoped lang="less">
.top-category {
    h3 {
        font-size: 28px;
        color: #666;
        font-weight: normal;
        text-align: center;
        line-height: 100px;
    }
    .sub-list {
        margin-top: 20px;
        background-color: #fff;
        ul {
            display: flex;
            padding: 0 32px;
            flex-wrap: wrap;
            li {
                width: 168px;
                height: 160px;
                a {
                    text-align: center;
                    display: block;
                    font-size: 16px;
                    img {
                        width: 100px;
                        height: 100px;
                    }
                    p {
                        line-height: 40px;
                    }
                    &:hover {
                        color: @xtxColor;
                    }
                }
            }
        }
    }
    .ref-goods {
        background-color: #fff;
        margin-top: 20px;
        position: relative;
        .head {
            .xtx-more {
                position: absolute;
                top: 20px;
                right: 20px;
            }
            .tag {
                text-align: center;
                color: #999;
                font-size: 20px;
                position: relative;
                top: -20px;
            }
        }
        .body {
            display: flex;
            justify-content: flex-start;
            flex-wrap: wrap;
            padding: 0 65px 30px;
        }
    }
}
</style>